This wall switch allows you to control plug-in devices, lamp sockets, wall receptacles, or other Wireless Command receivers without using any wires. Since you won't need any wires, you have complete flexibility in where you place your switch. Transmission range is 100 feet, so you can even mount the switch on the opposite side of the room. You'll be able to turn the receiving devices on and off, or adjust the brightness to one of five levels. The switch is powered by one CR2032 battery, included. With typical use, the battery can last up to five years.